Krofta Multifloat

Processing effluent from multiple wastewater streams is a challenge faced by many operations in a number of industries. Engineered with a rectangular footprint, the Krofta Multifloat from Ecolab maximizes limited floor space while providing superior DAF technology.

Rectangular dissolved air flotation clarificationDesigned for a number of industrial and municipal applications, the Krofta Multifloat from Ecolab utilizes proven DAF technology to provide lower maintenance and reduced operating costs. The system additionally offers multiple standard designs to meet the most rigorous production requirements.

How it works Dissolved Air Flotation (DAF) technology was developed by Milos Krofta and now serves as one of the most effective solutions for wastewater treatment in a number of applications including food and beverage processing, municipal wastewater and industrial processing. The Krofta Multifloat rectangular clarifier utilizes DAF technology to float solids to the top of the water surface where it is removed as sludge.

Steps in the Krofta Multifloat process:

Raw wastewater mixed with aerated recycle flow is added at the base of the unit

A header pipe evenly distributes the flow to individual FECs in the floatation tank

Flow is retained for a minimum of 3-4 minutes

Flocculated particles attach to the aerated water

Flocculated particles rise along the plates toward the surface

The plates assist in the rise rate by reducing the hydraulic head over the particles

Clarified water is drawn back down between the FECs to a collection area

Clarified water flows up over a divider plate at the top of the tank into a reservoir

Clarified water is discharged by gravity

A portion of the flow is captured and recycled back to the air dissolving tube (ADT)

Floated materials are collected at the top-directed toward the sludge collection rake

Rake pushes the floated material over a simple beach design

Floated material is deposited into a small sludge collection trough

Material is discharged by gravity

Krofta automatic level control system maintains a constant level

Grit or other debris, which do not float, are collected in the v-bottom of the unit, and purged by an automatic valve

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